Background Information

The Swamp Oil 500 was targeted by Dr. Doofenshmirtz and his Deflatinator Ray.

Phineas and Ferb's car number is based off of Jeff "Swampy" Marsh's favorite racer, Juan Pablo Montoya, who (at the time) drove the #42 for Chip Ganassi Racing. The Swamp Oil 500 is a parody of NASCAR's season opener The Daytona 500.